CN114114656A

CN114114656A - Optical imaging lens

Info

Publication number: CN114114656A
Application number: CN202111511773.2A
Authority: CN
Inventors: 李明; 杨健; 贺凌波
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2017-07-31
Filing date: 2017-07-31
Publication date: 2022-03-01
Anticipated expiration: 2037-07-31
Also published as: CN107219613B; CN114114656B; CN107219613A

Abstract

The application discloses an optical imaging lens, this optical imaging lens includes along the optical axis from the object side to the image side in proper order: the lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens has positive focal power; the second lens, the third lens and the sixth lens all have negative focal power; at least one of the fourth lens and the fifth lens has positive optical power; the object side surface of the first lens and the image side surface of the fourth lens are convex surfaces; the image side surface of the second lens and the image side surface of the sixth lens are both concave surfaces; and the distance TTL from the center of the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens meet the condition that TTL/ImgH is less than or equal to 1.7.

Description

Optical imaging lens

Divisional application

The application is a divisional application of a Chinese patent application with the invention name of 'optical imaging lens' and the application number of 201710640672.2 filed on 31/07/31/2017.

Technical Field

The present application relates to an optical imaging lens, and more particularly, to an optical imaging lens including six lenses.

Background

In recent years, with the development of science and technology, portable electronic products have been gradually raised, and more people enjoy portable electronic products having an image capturing function, so that the demand of the market for an image capturing lens suitable for portable electronic products has been gradually increased. As portable electronic products tend to be miniaturized, the total length of the lens is limited, thereby increasing the design difficulty of the lens.

Meanwhile, with the improvement of the performance and the reduction of the size of a common photosensitive element such as a photosensitive coupling element (CCD) or a Complementary Metal Oxide Semiconductor (CMOS), the number of pixels of the photosensitive element is increased and the size of the pixels is reduced, thereby providing higher requirements for the high imaging quality and the miniaturization of a matched optical imaging lens.

The f-number Fno (total effective focal length of the lens/entrance pupil diameter of the lens) commonly configured in the conventional lens is 2.0 or more than 2.0, and although such a lens can meet the requirement of miniaturization, the imaging quality of the lens cannot be guaranteed under the conditions of insufficient light (such as rainy days, dusk and the like), shaking hands and the like, so that the lens with the f-number Fno of 2.0 or more than 2.0 cannot meet the imaging requirement of higher order.

Disclosure of Invention

The present application provides an optical imaging lens applicable to portable electronic products that may solve, at least, or in part, at least one of the above-mentioned disadvantages of the related art.

An aspect of the present application provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: the lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens may have a positive optical power; the second lens, the third lens and the sixth lens may each have a negative focal power; at least one of the fourth lens and the fifth lens may have positive optical power; the object side surface of the first lens and the image side surface of the fourth lens can both be convex surfaces; the image side surface of the second lens and the image side surface of the sixth lens can both be concave surfaces; and the distance TTL from the center of the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens can meet the condition that TTL/ImgH is less than or equal to 1.7.

In one embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens can satisfy f/EPD ≦ 1.8.

In one embodiment, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens may satisfy-1 < f1/f2 < 0.

In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens can satisfy 1 < f/f1 < 1.5.

In one embodiment, the central thickness CT1 of the first lens element on the optical axis and the central thickness CT2 of the second lens element on the optical axis satisfy 2.0 < CT1/CT2 < 3.5.

In one embodiment, the total effective focal length f of the optical imaging lens and the curvature radius R12 of the image side surface of the sixth lens can satisfy 2.5 < f/R12 < 4.0.

In one embodiment, the total effective focal length f of the optical imaging lens and the curvature radius R1 of the object side surface of the first lens can satisfy 2 ≦ f/R1 < 2.5.

In one embodiment, the fourth lens may have positive optical power, and the effective focal length f4 and the total effective focal length f of the optical imaging lens may satisfy 0.7 < f4/f < 1.2.

In one embodiment, the Abbe number V1 of the first lens and the Abbe number V2 of the second lens can satisfy 2.0 < V1/V2 < 4.0.

In one embodiment, the angle of incidence β 62 of the upper ray of maximum field of view on the image-side face of the sixth lens may satisfy 7 ° < β 62 < 12 °.

In one embodiment, the total effective focal length f of the optical imaging lens and the radius of curvature R9 of the object-side surface of the fifth lens can satisfy f/| R9| ≦ 0.35.

The system has the advantages that six lenses are adopted, the focal power, the surface type and the center thickness of each lens, the on-axis distance between each lens and the like of each lens are reasonably distributed, the system has the advantage of large aperture in the process of increasing the light flux, and therefore the imaging effect in a dark environment is enhanced while the marginal light aberration is improved. Meanwhile, the optical imaging lens with the configuration has at least one beneficial effect of miniaturization, large aperture, high imaging quality, low sensitivity and the like.

Drawings

Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments when taken in conjunction with the accompanying drawings. In the drawings:

fig. 1 shows a schematic structural view of an optical imaging lens according to embodiment 1 of the present application;

fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 1;

fig. 3 is a schematic structural view showing an optical imaging lens according to embodiment 2 of the present application;

fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 2;

fig. 5 is a schematic structural view showing an optical imaging lens according to embodiment 3 of the present application;

fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 3;

fig. 7 is a schematic structural view showing an optical imaging lens according to embodiment 4 of the present application;

fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 4;

fig. 9 is a schematic structural view showing an optical imaging lens according to embodiment 5 of the present application;

fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 5;

fig. 11 is a schematic structural view showing an optical imaging lens according to embodiment 6 of the present application;

fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 6;

fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application;

fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 7;

fig. 15 is a schematic structural view showing an optical imaging lens according to embodiment 8 of the present application;

fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 8;

fig. 17 is a schematic structural view showing an optical imaging lens according to embodiment 9 of the present application;

fig. 18A to 18D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 9;

fig. 19 schematically shows the angle of incidence β 62 of the upper ray of the maximum field of view on the image-side surface of the sixth lens.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of the present application.

In the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.

Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side surface, and the surface of each lens closest to the image plane is called the image side surface.

It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The features, principles, and other aspects of the present application are described in detail below.

An optical imaging lens according to an exemplary embodiment of the present application includes, for example, six lenses having optical powers, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The optical imaging lens can further comprise a photosensitive element arranged on the imaging surface.

The first lens can have positive focal power, and the object side surface of the first lens can be a convex surface; the second lens can have negative focal power, and the image side surface of the second lens can be concave; the third lens has positive focal power or negative focal power; the fourth lens has positive focal power or negative focal power, and the image side surface of the fourth lens is a convex surface; the fifth lens has positive focal power or negative focal power; and the sixth lens has negative focal power, and the image side surface of the sixth lens is concave.

In one embodiment, the third lens may have a negative optical power. The third lens has negative focal power, and is beneficial to reducing the sensitivity of the system.

In one embodiment, the object-side surface of the fifth lens element can be concave and the image-side surface can be convex. Arranging the fifth lens in a meniscus shape convex to the image side helps to reduce the amount of astigmatism in the system and to match the chip chief ray angle CRA.

The total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens can satisfy 1 < f/f1 < 1.5, and more specifically, f and f1 can further satisfy 1.05 ≦ f/f1 ≦ 1.34. The focal power of the first lens is reasonably distributed, so that the imaging lens has better capacity of balancing curvature of field.

An effective focal length f4 of the fourth lens and a total effective focal length f of the optical imaging lens may satisfy 0.7 < f4/f < 1.2, and more specifically, f4 and f may further satisfy 0.84 ≦ f4/f ≦ 1.04. The focal power of the fourth lens is reasonably distributed, so that the imaging lens has better astigmatism balancing capability.

The effective focal length f1 of the first lens and the effective focal length f2 of the second lens can satisfy-1 < f1/f2 < 0, more specifically, f1 and f2 further satisfy-0.57 < f1/f2 < 0.32. Through the reasonable distribution of the focal power of the first lens and the second lens, the light deflection angle can be reduced, and the sensitivity of the system is reduced.

The central thickness CT1 of the first lens on the optical axis and the central thickness CT2 of the second lens on the optical axis can satisfy 2.0 < CT1/CT2 < 3.5, more specifically, CT1 and CT2 can further satisfy 2.27 < CT1/CT2 < 3.41. Through the reasonable arrangement of the central thicknesses of the first lens and the second lens, the lens has better capability of balancing aberration.

The total effective focal length f of the optical imaging lens and the curvature radius R1 of the object side surface of the first lens can satisfy 2 ≦ f/R1 ≦ 2.5, and more specifically, f and R1 can further satisfy 2.03 ≦ f/R1 ≦ 2.34. The curvature radius of the object side surface of the first lens is reasonably arranged, so that the aberration of the system can be effectively balanced, and the imaging quality of the lens is improved.

The total effective focal length f of the optical imaging lens and the curvature radius R9 of the object side surface of the fifth lens can satisfy f/| R9| ≦ 0.35, and more specifically, f and R9 can further satisfy 0 ≦ f/| R9| ≦ 0.27. The total effective focal length f of the optical imaging lens and the curvature radius R10 of the image side surface of the fifth lens can satisfy f/| R10| ≦ 0.5, and more specifically, f and R10 can further satisfy 0.08 ≦ f/| R10| ≦ 0.42.

The total effective focal length f of the optical imaging lens and the curvature radius R12 of the image side surface of the sixth lens can satisfy 2.5 < f/R12 < 4.0, and more specifically, f and R12 can further satisfy 2.93 < f/R12 < 3.79. The curvature radius of the sixth lens is reasonably arranged, so that the lens can be well matched with a common chip.

An incident angle β 62 (see fig. 19) of the upper light of the maximum field of view on the image-side surface of the sixth lens may satisfy 7 ° < β 62 < 12 °, and more specifically, β 62 may further satisfy 8.3 ° ≦ β 62 ≦ 11 °. By controlling β 62 within a reasonable range, the ghost image state of the system can be effectively reduced to an acceptable range.

The Abbe number V1 of the first lens and the Abbe number V2 of the second lens may satisfy 2.0 < V1/V2 < 4.0, and more specifically, V1 and V2 may further satisfy 2.23 ≦ V1/V2 ≦ 3.14. The materials of the first lens and the second lens are reasonably selected, so that the imaging lens has better capability of balancing chromatic aberration.

f/EPD ≦ 1.8 may be satisfied between the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens, and more specifically, f and EPD may further satisfy 1.68 ≦ f/EPD ≦ 1.78. The smaller the f-number Fno of the optical imaging lens (i.e., the total effective focal length f of the lens/the entrance pupil diameter EPD of the lens), the larger the clear aperture of the lens, the more the amount of light entering in the same unit time. The reduction of f-number Fno can promote image plane luminance effectively to make the camera lens can satisfy the shooting demand when light is not enough better. The lens is configured to satisfy the conditional expression f/EPD less than or equal to 1.8, so that the lens has the advantage of a large aperture in the process of increasing the light transmission quantity, and the imaging effect in a dark environment is enhanced while the marginal light aberration is improved.

The total optical length TTL (i.e., the on-axis distance from the center of the object side surface of the first lens to the imaging surface of the optical imaging lens) of the optical imaging lens and the half ImgH of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens can satisfy that TTL/ImgH is less than or equal to 1.7, and more specifically, the TTL and the ImgH can further satisfy that TTL/ImgH is less than or equal to 1.56 and less than or equal to 1.64. By controlling the total optical length and the image high ratio of the lens, the total size of the imaging lens can be effectively compressed to realize the ultrathin characteristic and the miniaturization of the imaging lens, so that the imaging lens can be well suitable for systems with limited sizes, such as portable electronic products.

In an exemplary embodiment, the optical imaging lens may further be provided with at least one diaphragm to improve the imaging quality of the lens. It should be understood by those skilled in the art that the diaphragm may be disposed at any position between the object side and the image side as needed, that is, the diaphragm disposition should not be limited to the position described in the embodiments below.

Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element on the imaging surface.

The optical imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, six lenses as described above. Through reasonable distribution of focal power, surface type, center thickness of each lens, on-axis distance between each lens and the like, the sensitivity of the lens can be effectively reduced, the processability of the lens can be improved, and the optical imaging lens is more beneficial to production and processing and is applicable to portable electronic products. Meanwhile, the optical imaging lens with the configuration has the beneficial effects of ultrathin large aperture, high imaging quality and the like.

In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics, and has advantages of improving distortion aberration and improving astigmatic aberration. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the imaging quality. In addition, the use of the aspherical lens can also effectively reduce the number of lenses in the optical system.

However, it will be appreciated by those skilled in the art that the number of lenses constituting an optical imaging lens may be varied to achieve the various results and advantages described in the present specification without departing from the claimed subject matter. For example, although six lenses are exemplified in the embodiment, the optical imaging lens is not limited to including six lenses. The optical imaging lens may also include other numbers of lenses, if desired.

Specific examples of an optical imaging lens applicable to the above-described embodiments are further described below with reference to the drawings.

Example 1

An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic structural diagram of an optical imaging lens according to embodiment 1 of the present application.

As shown in fig. 1, the optical imaging lens includes, in order from an object side to an imaging side along an optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

The first lens element E1 has positive optical power, and has a convex object-side surface S1 and a concave image-side surface S2, and both the object-side surface S1 and the image-side surface S2 of the first lens element E1 are aspheric.

The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4, and both the object-side surface S3 and the image-side surface S4 of the second lens element E2 are aspheric.

The third lens element E3 has negative power, and has a concave object-side surface S5 and a convex image-side surface S6, and both the object-side surface S5 and the image-side surface S6 of the third lens element E3 are aspheric.

The fourth lens element E4 has positive optical power, and has a concave object-side surface S7 and a convex image-side surface S8, and both the object-side surface S7 and the image-side surface S8 of the fourth lens element E4 are aspheric.

The fifth lens element E5 has positive optical power, and has a concave object-side surface S9, a convex image-side surface S10, and both object-side surface S9 and image-side surface S10 of the fifth lens element E5 are aspheric.

The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12, and both the object-side surface S11 and the image-side surface S12 of the sixth lens element E6 are aspheric.

Optionally, the optical imaging lens may further include a filter E7 having an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

Alternatively, a stop STO for limiting the light beam may be provided between the object side and the first lens E1 to improve the imaging quality of the optical imaging lens.

Table 1 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 1, wherein the unit of the radius of curvature and the thickness are both millimeters (mm).

TABLE 1

As can be seen from table 1, the central thickness CT1 of the first lens E1 on the optical axis and the central thickness CT2 of the second lens E2 on the optical axis satisfy CT1/CT 2-3.09; the dispersion coefficient V1 of the first lens E1 and the dispersion coefficient V2 of the second lens E2 satisfy V1/V2-3.14.

The embodiment adopts five lenses as an example, and reasonably distributes the focal length of each lens, the surface type of each lens, the center thickness of each lens and the spacing distance between each lens, thereby realizing the miniaturization of the lens, increasing the light flux of the lens and improving the imaging quality of the lens. Each lens can adopt an aspheric lens, and each aspheric surface type x is defined by the following formula:

wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c being 1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is the conic coefficient (given in table 1); ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1 to S8 used in example 1₄、A₆、A₈、A₁₀、A₁₂、A₁₄And A₁₆。

TABLE 2

Table 3 below gives the effective focal lengths f1 to f6 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens (i.e., the distance on the optical axis from the center of the object side surface S1 of the first lens E1 to the imaging surface S15), and half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the optical imaging lens in embodiment 1.

TABLE 3

As can be seen from table 3, f1/f2 ═ 0.32 is satisfied between the effective focal length f1 of the first lens E1 and the effective focal length f2 of the second lens E2; f/f1 is 1.07 between the effective focal length f1 of the first lens E1 and the total effective focal length f of the optical imaging lens; f4/f is equal to 0.91 between the effective focal length f4 of the fourth lens E4 and the total effective focal length f of the optical imaging lens; the total optical length TTL of the optical imaging lens and the half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens satisfy that TTL/ImgH is 1.56. As can be seen from table 1 and table 3, f/R1 is 2.30 between the total effective focal length f of the optical imaging lens and the radius of curvature R1 of the object-side surface S1 of the first lens E1; f/| R9| -0.11 is satisfied between the total effective focal length f of the optical imaging lens and the curvature radius R9 of the object side S9 of the fifth lens E5; f/| R10| -0.24 is satisfied between the total effective focal length f of the optical imaging lens and the curvature radius R10 of the image side surface S10 of the fifth lens E5; the total effective focal length f of the optical imaging lens and the curvature radius R12 of the image side surface S12 of the sixth lens E6 satisfy that f/R12 is 3.21.

In embodiment 1, f/EPD of 1.68 is satisfied between the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens; the angle of incidence β 62 of the upper ray of the maximum field of view on the image-side surface of the sixth lens is 10.7 °.

Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents the distortion magnitude values in the case of different angles of view. Fig. 2D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 1, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the optical imaging lens according to embodiment 1 can achieve good imaging quality.

Example 2

An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of parts similar to those of embodiment 1 will be omitted for the sake of brevity. Fig. 3 shows a schematic structural diagram of an optical imaging lens according to embodiment 2 of the present application.

As shown in fig. 3, the optical imaging lens includes, in order from the object side to the imaging side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

The third lens E3 has negative power, and has a concave object-side surface S5, a concave image-side surface S6, and both object-side surface S5 and image-side surface S6 of the third lens E3 are aspheric.

Table 4 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 2, wherein the unit of the radius of curvature and the thickness are both millimeters (mm). Table 5 shows high-order term coefficients that can be used for each aspherical mirror surface in example 2, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above. Table 6 shows the effective focal lengths f1 to f6 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the optical imaging lens in embodiment 2.

TABLE 4

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

6.2687E-02

8.6605E-03

-4.5636E-02

7.4360E-02

-7.1432E-02

3.4569E-02

-7.7543E-03

S2

-9.3123E-02

7.8171E-02

8.3047E-02

-3.0703E-01

3.4659E-01

-1.8953E-01

4.0751E-02

S3

-1.5378E-01

2.3354E-01

7.0522E-02

-4.4852E-01

5.2903E-01

-2.7278E-01

5.2708E-02

S4

3.3410E-02

2.6340E-02

4.4699E-01

-1.1914E+00

1.7019E+00

-1.2890E+00

4.5150E-01

S5

-1.1041E-01

-1.2281E-01

5.8468E-01

-1.6380E+00

2.5744E+00

-2.1534E+00

7.6605E-01

S6

-8.2993E-02

-6.2310E-02

9.2223E-02

-1.6090E-01

1.7545E-01

-9.5870E-02

2.2427E-02

S7

4.2345E-02

4.0006E-03

-4.0589E-02

-8.9978E-03

2.8162E-02

-1.5030E-02

2.7516E-03

S8

-6.5886E-02

1.5441E-01

-1.8932E-01

1.3690E-01

-5.6653E-02

1.2038E-02

-1.0182E-03

S9

1.3203E-01

-2.7606E-01

1.2589E-01

-3.5591E-03

-1.3014E-02

3.8295E-03

-3.5125E-04

S10

2.3162E-01

-4.3738E-01

3.0172E-01

-1.1504E-01

2.5883E-02

-3.1933E-03

1.6550E-04

S11

-2.1677E-01

1.7989E-02

6.6332E-02

-3.6138E-02

8.4840E-03

-9.7009E-04

4.4156E-05

S12

-2.1120E-01

1.4160E-01

-5.7738E-02

1.4432E-02

-2.2087E-03

1.8958E-04

-6.9285E-06

TABLE 5

TABLE 6

Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 2. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents the distortion magnitude values in the case of different angles of view. Fig. 4D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the optical imaging lens according to embodiment 2 can achieve good imaging quality.

Example 3

An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic structural diagram of an optical imaging lens according to embodiment 3 of the present application.

As shown in fig. 5, the optical imaging lens includes, in order from the object side to the imaging side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

The first lens element E1 has positive optical power, and has a convex object-side surface S1 and a convex image-side surface S2, and both the object-side surface S1 and the image-side surface S2 of the first lens element E1 are aspheric.

The fifth lens element E5 has positive optical power, and has a convex object-side surface S9 and a convex image-side surface S10, and both the object-side surface S9 and the image-side surface S10 of the fifth lens element E5 are aspheric.

Table 7 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 3, wherein the unit of the radius of curvature and the thickness are both millimeters (mm). Table 8 shows high-order term coefficients that can be used for each aspherical mirror surface in example 3, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above. Table 9 shows the effective focal lengths f1 to f6 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the optical imaging lens in embodiment 3.

TABLE 7

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

5.7398E-02

3.7527E-02

-1.5996E-01

2.5988E-01

-2.4032E-01

1.1312E-01

-2.1899E-02

S2

-1.1782E-01

3.4423E-01

-5.8428E-01

5.6357E-01

-3.2591E-01

1.0928E-01

-1.8318E-02

S3

-1.6921E-01

6.3560E-01

-1.1440E+00

1.3546E+00

-1.0119E+00

4.6845E-01

-1.0376E-01

S4

1.6396E-02

2.1256E-01

-3.0961E-01

5.9850E-03

7.5499E-01

-1.0248E+00

4.8868E-01

S5

-1.1151E-01

-1.3488E-01

7.0287E-01

-2.0639E+00

3.2877E+00

-2.7606E+00

9.9463E-01

S6

-8.6368E-02

1.6281E-02

-1.5233E-01

2.2379E-01

-1.5686E-01

5.5324E-02

-4.4032E-03

S7

4.1490E-02

5.8795E-02

-1.4831E-01

7.1990E-02

1.2901E-03

-1.5000E-02

4.2654E-03

S8

-5.4914E-02

1.4260E-01

-1.7289E-01

1.2654E-01

-5.4654E-02

1.2391E-02

-1.1399E-03

S9

1.3587E-01

-3.2540E-01

1.8288E-01

-3.8520E-02

-9.5312E-05

1.2107E-03

-1.3247E-04

S10

2.4095E-01

-4.5694E-01

3.2287E-01

-1.2950E-01

3.1508E-02

-4.2899E-03

2.4835E-04

S11

-1.9726E-01

1.5906E-02

5.6164E-02

-2.9409E-02

6.6491E-03

-7.3602E-04

3.2644E-05

S12

-1.8024E-01

1.1157E-01

-4.2038E-02

9.4157E-03

-1.2629E-03

9.3904E-05

-2.9232E-06

TABLE 8

TABLE 9

Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 3. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents the distortion magnitude values in the case of different angles of view. Fig. 6D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 3, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the optical imaging lens according to embodiment 3 can achieve good imaging quality.

Example 4

An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application.

As shown in fig. 7, the optical imaging lens includes, in order from the object side to the imaging side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6, and both the object-side surface S5 and the image-side surface S6 of the third lens element E3 are aspheric.

The fifth lens E5 has negative power, and has a concave object-side surface S9, a concave image-side surface S10, and both object-side surface S9 and image-side surface S10 of the fifth lens E5 are aspheric.

Table 10 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 4, wherein the unit of the radius of curvature and the thickness are both millimeters (mm). Table 11 shows high-order term coefficients that can be used for each aspherical mirror surface in embodiment 4, wherein each aspherical mirror surface type can be defined by the formula (1) given in embodiment 1 above. Table 12 shows the effective focal lengths f1 to f6 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the optical imaging lens in embodiment 4.

Watch 10

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

6.1230E-02

9.6914E-03

-5.1005E-02

7.8296E-02

-7.1415E-02

3.3084E-02

-6.9589E-03

S2

-1.2414E-01

1.6440E-01

-3.9313E-02

-1.9603E-01

2.7475E-01

-1.5843E-01

3.4275E-02

S3

-1.8033E-01

3.5444E-01

-1.2398E-01

-3.0374E-01

4.9972E-01

-2.9791E-01

6.3553E-02

S4

2.1451E-02

1.5404E-01

-1.5537E-02

-1.1853E-01

1.0508E-01

5.1356E-02

-2.8879E-02

S5

-1.2527E-01

-9.9046E-04

7.5964E-03

-1.0241E-01

2.8890E-01

-3.6913E-01

1.9943E-01

S6

-8.5292E-02

-3.2348E-02

8.2299E-03

-4.9017E-02

8.9898E-02

-6.4413E-02

1.9961E-02

S7

2.6421E-02

1.9031E-02

-5.9176E-02

-8.5956E-03

3.6390E-02

-2.1129E-02

4.3941E-03

S8

-6.4075E-02

1.3629E-01

-1.5878E-01

9.8196E-02

-3.1266E-02

4.2273E-03

-1.0927E-04

S9

9.8044E-02

-1.8956E-01

3.7191E-02

4.3633E-02

-2.6347E-02

5.6607E-03

-4.4081E-04

S10

1.8839E-01

-3.4407E-01

2.1472E-01

-7.4134E-02

1.5413E-02

-1.7953E-03

8.9108E-05

S11

-1.7275E-01

1.0926E-02

4.5365E-02

-2.2304E-02

4.7859E-03

-5.0298E-04

2.1086E-05

S12

-1.8744E-01

1.1148E-01

-3.9727E-02

8.4697E-03

-1.0740E-03

7.4205E-05

-2.1123E-06

TABLE 11

TABLE 12

Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 4. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents the distortion magnitude values in the case of different angles of view. Fig. 8D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the optical imaging lens according to embodiment 4 can achieve good imaging quality.

Example 5

An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic structural diagram of an optical imaging lens according to embodiment 5 of the present application.

As shown in fig. 9, the optical imaging lens includes, in order from the object side to the imaging side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10, and both the object-side surface S9 and the image-side surface S10 of the fifth lens element E5 are aspheric.

Table 13 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 5, wherein the unit of the radius of curvature and the thickness are both millimeters (mm). Table 14 shows high-order term coefficients that can be used for each aspherical mirror surface in example 5, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above. Table 15 shows the effective focal lengths f1 to f6 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the optical imaging lens in embodiment 5.

Watch 13

TABLE 14

Watch 15

Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 5. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents the distortion magnitude values in the case of different angles of view. Fig. 10D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 5, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens according to embodiment 5 can achieve good imaging quality.

Example 6

An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application.

As shown in fig. 11, the optical imaging lens includes, in order from the object side to the imaging side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8, and both the object-side surface S7 and the image-side surface S8 of the fourth lens element E4 are aspheric.

Table 16 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 6, wherein the unit of the radius of curvature and the thickness are both millimeters (mm). Table 17 shows high-order term coefficients that can be used for each aspherical mirror surface in example 6, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above. Table 18 shows the effective focal lengths f1 to f6 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the optical imaging lens in embodiment 6.

TABLE 16

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

6.1804E-02

3.4033E-03

-3.4696E-02

5.8950E-02

-6.0090E-02

3.0669E-02

-7.2163E-03

S2

-1.0144E-01

1.0806E-01

1.4464E-02

-2.0290E-01

2.4999E-01

-1.4087E-01

3.0573E-02

S3

-1.6119E-01

2.5986E-01

2.7605E-02

-3.7524E-01

4.3038E-01

-2.0243E-01

3.2002E-02

S4

3.1557E-02

5.7324E-02

2.7530E-01

-6.2792E-01

7.1338E-01

-4.1032E-01

1.3174E-01

S5

-1.1395E-01

-1.6726E-01

8.0150E-01

-2.1428E+00

3.2208E+00

-2.5841E+00

8.8092E-01

S6

-9.8597E-02

-6.1531E-02

1.1663E-01

-2.0560E-01

2.1471E-01

-1.1364E-01

2.5674E-02

S7

2.3282E-02

1.6671E-02

-4.8096E-02

6.1130E-03

1.2506E-02

-8.0734E-03

1.6092E-03

S8

-5.7454E-02

1.1753E-01

-1.2888E-01

8.9872E-02

-3.7302E-02

7.9728E-03

-6.7447E-04

S9

1.2721E-01

-2.8510E-01

1.4365E-01

-1.4727E-02

-9.6776E-03

3.3687E-03

-3.2997E-04

S10

2.4459E-01

-4.6426E-01

3.2676E-01

-1.2764E-01

2.9345E-02

-3.6789E-03

1.9267E-04

S11

-2.1334E-01

1.8068E-02

6.4621E-02

-3.4958E-02

8.1245E-03

-9.1807E-04

4.1233E-05

S12

-2.0793E-01

1.4170E-01

-5.8523E-02

1.4868E-02

-2.3286E-03

2.0683E-04

-7.9281E-06

TABLE 17

Watch 18

Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 6. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents the distortion magnitude values in the case of different angles of view. Fig. 12D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 6, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens according to embodiment 6 can achieve good imaging quality.

Example 7

An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application.

As shown in fig. 13, the optical imaging lens includes, in order from the object side to the imaging side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

The sixth lens E6 has negative power, and has a concave object-side surface S11 and a concave image-side surface S12, and both the object-side surface S11 and the image-side surface S12 of the sixth lens E6 are aspheric.

Table 19 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 7, wherein the unit of the radius of curvature and the thickness are both millimeters (mm). Table 20 shows high-order term coefficients that can be used for each aspherical mirror surface in example 7, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above. Table 21 shows the effective focal lengths f1 to f6 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 of the optical imaging lens in embodiment 7.

Watch 19

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

6.2257E-02

3.6433E-03

-3.9207E-02

6.9202E-02

-7.3175E-02

3.8996E-02

-9.2270E-03

S2

-1.0431E-01

1.1914E-01

-1.3488E-02

-1.6137E-01

2.0591E-01

-1.1034E-01

2.0751E-02

S3

-1.6347E-01

2.7819E-01

2.6546E-02

-4.8052E-01

6.3644E-01

-3.5393E-01

6.9858E-02

S4

2.5237E-02

1.0710E-01

1.1674E-01

-2.7619E-01

1.6406E-01

1.0455E-01

-6.4258E-02

S5

-1.2760E-01

-5.8859E-02

2.9238E-01

-9.1038E-01

1.5633E+00

-1.4408E+00

5.7858E-01

S6

-9.4480E-02

-5.0371E-02

7.1558E-02

-1.5425E-01

1.8931E-01

-1.1365E-01

2.9446E-02

S7

2.2644E-02

2.4000E-02

-8.1542E-02

4.1214E-02

-8.0245E-03

-1.7695E-03

9.7316E-04

S8

-6.2578E-02

1.0086E-01

-1.0981E-01

8.0821E-02

-3.5143E-02

7.7808E-03

-6.7647E-04

S9

1.1317E-01

-2.7333E-01

1.3529E-01

-8.5639E-03

-1.3075E-02

4.3429E-03

-4.3552E-04

S10

2.2782E-01

-4.2278E-01

2.9386E-01

-1.1618E-01

2.7665E-02

-3.6397E-03

2.0109E-04

S11

-1.6616E-01

2.9247E-02

3.1934E-02

-1.8220E-02

4.1856E-03

-4.6540E-04

2.0608E-05

S12

-1.7230E-01

1.1619E-01

-4.9305E-02

1.3031E-02

-2.1544E-03

2.0398E-04

-8.3380E-06

Watch 20

TABLE 21

Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 7. Fig. 14C shows a distortion curve of the optical imaging lens of embodiment 7, which represents the distortion magnitude values in the case of different angles of view. Fig. 14D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 7, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 14A to 14D, the optical imaging lens according to embodiment 7 can achieve good imaging quality.

Example 8

An optical imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16D. Fig. 15 shows a schematic structural diagram of an optical imaging lens according to embodiment 8 of the present application.

As shown in fig. 15, the optical imaging lens includes, in order from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

Table 22 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 8, wherein the unit of the radius of curvature and the thickness are both millimeters (mm). Table 23 shows high-order term coefficients that can be used for each aspherical mirror surface in embodiment 8, wherein each aspherical mirror surface type can be defined by the formula (1) given in embodiment 1 above. Table 24 shows the effective focal lengths f1 to f6 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 of the optical imaging lens in embodiment 8.

TABLE 22

TABLE 23

Watch 24

Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 8, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 8. Fig. 16C shows a distortion curve of the optical imaging lens of embodiment 8, which represents the distortion magnitude values in the case of different angles of view. Fig. 16D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 8, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 16A to 16D, the optical imaging lens according to embodiment 8 can achieve good imaging quality.

Example 9

An optical imaging lens according to embodiment 9 of the present application is described below with reference to fig. 17 to 18D. Fig. 17 is a schematic structural view showing an optical imaging lens according to embodiment 9 of the present application.

As shown in fig. 17, the optical imaging lens includes, in order from the object side to the imaging side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

The third lens element E3 has positive optical power, and has a convex object-side surface S5 and a convex image-side surface S6, and both the object-side surface S5 and the image-side surface S6 of the third lens element E3 are aspheric.

Table 25 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 9, wherein the unit of the radius of curvature and the thickness are both millimeters (mm). Table 26 shows high-order term coefficients that can be used for each aspherical mirror surface in example 9, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above. Table 27 shows the effective focal lengths f1 to f6 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 of the optical imaging lens in example 9.

TABLE 25

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

5.4661E-02

2.0126E-02

-1.0234E-01

1.9923E-01

-2.1979E-01

1.2442E-01

-2.9404E-02

S2

-1.1236E-01

1.8584E-01

-1.3845E-01

-2.3930E-02

1.2707E-01

-9.0198E-02

1.9613E-02

S3

-1.9766E-01

4.4557E-01

-3.4579E-01

-9.2077E-02

4.5219E-01

-3.5421E-01

9.1892E-02

S4

3.3993E-02

1.7743E-01

-1.7989E-01

1.8027E-01

-2.6894E-01

3.4322E-01

-1.5499E-01

S5

-1.0733E-01

7.4068E-02

-4.0322E-01

1.0092E+00

-1.3669E+00

9.4378E-01

-2.4627E-01

S6

-6.2493E-02

-6.9770E-02

1.5363E-01

-2.9558E-01

3.2357E-01

-1.8233E-01

4.3273E-02

S7

2.8019E-02

6.2693E-03

-4.8186E-02

3.5442E-02

-1.5537E-02

3.2405E-03

-1.7281E-04

S8

-4.5520E-02

7.2976E-02

-9.4583E-02

8.1151E-02

-3.7846E-02

8.7795E-03

-8.0679E-04

S9

1.3842E-01

-2.6811E-01

1.5291E-01

-4.4325E-02

7.5135E-03

-7.1773E-04

2.7922E-05

S10

1.9802E-01

-3.5615E-01

2.2605E-01

-7.7140E-02

1.5180E-02

-1.6042E-03

6.9694E-05

S11

-1.9383E-01

1.5184E-02

5.2852E-02

-2.7222E-02

6.0493E-03

-6.5550E-04

2.8332E-05

S12

-1.8885E-01

1.2297E-01

-4.8187E-02

1.1149E-02

-1.5087E-03

1.0826E-04

-3.0459E-06

Watch 26

Watch 27

Fig. 18A shows an on-axis chromatic aberration curve of an optical imaging lens of embodiment 9, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 18B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 9. Fig. 18C shows a distortion curve of the optical imaging lens of embodiment 9, which represents the distortion magnitude values in the case of different angles of view. Fig. 18D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 9, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 18A to 18D, the optical imaging lens according to embodiment 9 can achieve good imaging quality.

In summary, examples 1 to 9 each satisfy the relationship shown in table 28 below.

Conditional expression (A) example	1	2	3	4	5	6	7	8	9
										f/EPD	1.68	1.68	1.70	1.69	1.70	1.69	1.78	1.69	1.68
f/\|R9\|	0.11	0.07	0.10	0.00	0.27	0.15	0.16	0.27	0.13
										f/\|R10\|	0.24	0.18	0.15	0.08	0.26	0.28	0.42	0.39	0.20
TTL/ImgH	1.56	1.56	1.56	1.56	1.56	1.56	1.56	1.56	1.64
										f1/f2	-0.32	-0.32	-0.50	-0.37	-0.32	-0.33	-0.36	-0.33	-0.57
f/f1	1.07	1.06	1.34	1.11	1.08	1.05	1.10	1.08	1.16
										CT1/CT2	3.09	2.98	3.40	3.24	3.38	2.96	3.13	3.41	2.27
f/R12	3.21	3.25	2.93	3.09	3.14	3.13	2.93	3.15	3.79
										f/R1	2.30	2.31	2.14	2.30	2.31	2.31	2.34	2.31	2.03
f4/f	0.91	0.92	1.04	0.94	0.84	0.86	0.85	0.87	1.03
										V1/V2	3.14	3.14	3.14	2.96	3.14	3.14	3.14	3.11	2.23
β62(°)	10.7	10.5	10.3	10.4	11.0	9.0	8.3	9.8	10.4

Watch 28

The present application also provides an imaging device whose electron photosensitive element may be a photo-coupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device may be a stand-alone imaging apparatus such as a digital camera, or may be an imaging module integrated on a mobile electronic apparatus such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. The optical imaging lens sequentially comprises from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens,

the first lens has positive optical power;

the second lens, the third lens and the sixth lens each have a negative optical power;

at least one of the fourth lens and the fifth lens has positive optical power;

the object side surface of the first lens and the image side surface of the fourth lens are convex surfaces;

the image side surface of the second lens and the image side surface of the sixth lens are both concave surfaces; and

the distance TTL from the center of the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens meet the condition that TTL/ImgH is less than or equal to 1.7.

2. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy f/EPD ≦ 1.8.

3. The optical imaging lens of claim 1, characterized in that the effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy-1 < f1/f2 < 0.

4. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy 1 < f/f1 < 1.5.

5. The optical imaging lens of claim 1, wherein a central thickness CT1 of the first lens element on the optical axis and a central thickness CT2 of the second lens element on the optical axis satisfy 2.0 < CT1/CT2 < 3.5.

6. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the radius of curvature R12 of the image side surface of the sixth lens satisfy 2.5 < f/R12 < 4.0.

7. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the radius of curvature of the object side surface of the first lens, R1, satisfy 2 ≦ f/R1 < 2.5.

8. The optical imaging lens of claim 1, wherein the fourth lens has a positive optical power, and an effective focal length f4 thereof and a total effective focal length f of the optical imaging lens satisfy 0.7 < f4/f < 1.2.

9. The optical imaging lens of claim 1, wherein the abbe number V1 of the first lens and the abbe number V2 of the second lens satisfy 2.0 < V1/V2 < 4.0.

10. The optical imaging lens of claim 1, characterized in that an angle of incidence β 62 of the upper rays of the largest field of view on the image-side surface of the sixth lens satisfies 7 ° < β 62 < 12 °.